I bought my daughter one of those toilet pottys she was like this too until I invested in some toilet steps off Amazon the minute I put them together she was on the toilet with them! However a year later and I'm about yeet these steps to crime out the window 🤣 little miss stocky fingers uses them as a way into the fridge an cupboard now xx
Have you tried a visionary board so he can see what happens and what comes next, you can try getting books with his favourite characters about them using the toilet, you can get stickers that he likes and try to put them on his potty. There are also things that you can get to stick in the toilet that spin when he hits the target so it’s like a little game for him